Hi Chris

Answering your questions

I have approx 120 Imp Gallon tank that has both inverts and fish
The filtration (and tank) was made by fit filtration (
www.fitfiltration.co.uk ) and comprises of 3 twin DLS spiral filters,
Sintered glass filter(Nitrate controler) and wet/Dry trickle filter.
I'm also running a Deltec Protien skimmer and Calcium reactor.

I think that the temperature swings are down to my lighting being in an
enclosed hood and the temp can go high. Even though I mentioned that the
temp goes down to 75, that doesn't happen very often. My heater stats are
set to 77, and typically that is what it goes down to.

My LFS suggested I had phosphate problem, so I purchased some Rowa phos from
them ( www.deltecaquariumsolutions.com ) .

Still the algae comes back.

Iain

"Chris (....)" wrote in message
t...

"Iain" wrote in message
...
I forgot to add, that the only way of getting rid of the algae on the
rocks
is to take the rocks out and scrape it off.

Within 3 weeks, you can see it forming again.

I do regular water changes of at least 5% (5 Imp Gallons) once a week.

The last time cleaned up each rock (over a space of a week) I changed
approx 30% of the water (using RO)

I really struggle with maintaining a constant temperature. It can vary
from
between 75 and up to 84 within the week (not good I know)


Iain
"Iain" wrote in message
...
Hi

Can anyone help

I've been plagued for some time now by green algae forming on the
glass.
I
know you cannot get away from cleaning the glass, but this is just too
much.
It also seems to settle on the rocks, and after a period of time the
rocks
turn a deep matt green and start growing grass. Not nice I can tell
you.
Nothing seems to eat it at all.

The obvious thing that I can think of is phosphate, but it measures
zero,
as
does my nitrite and nitrate.

I regularly replace my MH lights and keep them on for no more than 8
hours
a
day.

What else could be causing it ?


cheers


Iain






I am no expert, not that many of us can claim that, but heres a stab.
Couple of questions first:
How big is your tank?
What kind of filtration are you running?
What do you have your tank stocked with? (fish and inverts)
Why the temp swings, what kind of heaters are you running and is there
enough water circulation around the heaters and in the tank?

Your test kits could be wrong, you might want to get your water tested at
your LFS, most do it pretty cheap, or pick up a different brands test kit
if
you dont mond spending the extra $$$.